Gravitational waves can probe cosmic structures via gravitational lensing in ways that are highly complementary to electromagnetic signals:
1) their low frequency and phase coherence makes them sensitive to wave-optics diffraction and frequency-dependent effects,
2) weak interactions with matter allow them to probe dense regions, such as the cores of galactic halos and
3) accurate waveform models provide an additional handle to pinpoint lensing effects.
In this talk the speaker will describe how these features can be used to probe features of matter halos, such as the radial slope of the density and the existence of a central core. These unique signatures will enable novel probes of fundamental physics and astrophysics in galactic centres.
頻道：(網上講授)Zoom ID:421-480-1692 ← cosmology
講者：Giovanni Tambalo(Albert Einstein Institute)
“Copernicus Webinar and Colloquium Series”: To promote scientific discussions during this pandemic, they are organizing an online seminar series, i.e. Copernicus Webinar Series, seeking the most outstanding speakers to introduce innovative ideas and important progress in the field of gravity and cosmology. This series is named after the famous Polish Astronomer, Nicolaus Copernicus, whose discovery eventually marked the dawn of modern science.